Mine-door-operating mechanism



W. KORTKAMP.

MINE DOOR OPERAHNG MECHANISM.

APPLlCATlQN FILED SEPT. 30, 1921.

Patented Apr-n18, 1922.

gwuentoz/ W. KORTKAMP.

MINE DOOR OPERATING MECHANISM.

APPLICATION FILED SEPT- 30,192!- Patented Apr. 18, 1922.

2 smears-sun 2.

close'the 'doo'r,.-"the said'invention having for v To all "whom. it mayconcern:

Be it known that I, WVILLIAM Kon'rim ur, a citizen of-the UnitedStatesjot Amerlca, and resident of Hillsboro, in'the county of j MontgomeryandState of Illinois,jha've'invented certain "new ,and useful "Improve-"ments in Mine DoonOperating Mechanism, of whichjthefollowing-is aspecification.

This invention relates to mine trapdoor operating mechanism efl'ectiveto open and an object the provision jfof novel imeans whereby the doormay be operated 'froma distanc'e from the door aggregating from onehundred totwohundred'feet, according to "the requirements in practice. v

further object of'thisinventionis to produce a door operating mechanismwhich may bemaintained in positions clear. of obstructions that are verycommon 1n coal mines, andin which operating partsof the mechanism may beprotected or 'house-d'to prevent their belng fouledb'y'the accumulationof foreign substances or rubbish.

A still further object of this invention is to lproduce'novelmine dooroperating mech- 'anism effectiveto open'either a single'or' double door,and in which provision may be madefor operating doors at curves, ELSWIIl presently appear. v r v A 'still'further object of this invention'18 'to' produce a mine door operating mechanism in which the weight ofcars traveling on :rtrackmay be communicated evenly to the dooroperating links and levers to avoid v and vibration as the parts areundue shock actuated.

lVith the foregoing and other objects in) view,.the invention consistsin the detailsot construction; and in the "arrangement andcombiuation'ot partsto'b'e hereinafter inore fully set forth andclaimed.

In describing the invention in detaiIQref-f erencerwill' be had to the"accompanying drawings forming part ofthis application wherein likecharacters denote correspond-- 'ing parts which V "Figure" 1 illustratesa view'in side elevation of a track with a, door operating mechin theseveral views, and "in anism" embodying the invention applied thereto,the door being shown insection;

Figii1e 2 illustrates a plan view of the "said mechanism withfthe do" rin horizontal section;

Figure-8 illustrates aperspective view'o'f fragments of the operatingmechanism;

it M N -Doon-oPERArIn Ec innisiu.

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"WILLIAMIKORTKAMP, o 'HILI-ls on-o, :ILLINOiS.

p c o -et f B t-Q Q Patented Ap 18,1922. i Applicationfiledfiscptemb er30, 19 21. seriarnb:504;352;

iti te illustrates an lenlarg'eddetailed Figure 16 illustrates a: viewingelevation showing how'themecha'nism can be housed "to obviate theaccumulation of-foreign substances; and t e F gure *7 illustratessectional viewthereof;

-In these drawings {10, 11 an'dj l 2' denotje traclc sections, thesections -10 and "12 being suchremoteness'with'respect to the'section'll as to causethe operation of the door .when the 'car has reacheda predetermined distance fromfithe door. The'railsandoperatingfmechanism are shown as broken away I -'so that the door operatingmechanism or lthatjpart'thereotthat is actuated by the weight "of thecar, -be stationed; at arbi trarydistances from the door. The main dooroperating-shaft 13, which is' 'actuated by the weight 1 Of'tllfi car, is'vjournaled' in bearinglbrackets l-wh'ich may be-support-' ed on crossties 15 or other appropriate foundations, and these bearing bracketsmaybe increased or. diminished in number, accordi "ing'to-thelength of'theshaft employed.

Obviouslyythis shaft maybe supplied wvi th universal'joints suchas 15 itthe shaft-is employed on curveseb ut this is anbbviousdetail ofconstruction which one skilled in-the art may employ. I;

.i -The track, in the present embodiment of the invention,"is guardedby'a inine door 16 hinged to a postor' frame 17, asis ordinarily thecase,-and the door hasa' link-IS con nected to it by the mountingsf l9qThe; end

of the flink remote from tlie dooris" pivw otally connected to an'arm20,- and the said arm" is pivotally connected to-or mounted on a piostor bracket 21, in order' that the 3 said swing horizontally" from" thepositionishown in full lines' in -Fig'. 2 to-the dotted line positionthereo f inthe same fig ure. -The arm 20'has a "bracket 22 extend arm 23which latter arm is carried by. the shaft 13, in ord'enthat it may beoscillated ing outwardly from -one s-ide and this bracket 1s -pivo'tallyconnected 'to another to communicate motion to the'door5?* The;

shaft l mayhave yokes Q ifjattached to it which normally extendinwardlygtliat' is to say, when the door is closed, they willprojecttoward the track, and theseyokes are supplied with weights 25vhich---are intend ed to overcome gravity andifriction of the gateoperating mechanism for returning the parts to a closed positionautomatically for closing the door after a car has passed the gate. Thegate operating mechanism is under the control of the weight of the caruntil it passes the gate, and the gate is held open against the actionof the weights until the gate is clear.

The shaft 13 is oscillated by the Weight of the cars when passing overthe track, through the means of levers 26 and 27 which are assembledwith the inner end of the lever 27 pivotally connected to a base or tieon a pivot 28. The pivot 26 is mounted at one end on a stud or pivot 29which is anchored in one of the cross ties. The opposite end of the Ilever 26, or what may be termed the outer end thereof, is connected tothe lever 27 between its ends by a pivot 30. The lever 26 has a post 31secured to it, and the said post carries a tread engaging bar 32 whichextends parallel with one rail and normally has its upper edge above thetop of the rail. This tread bar is in position to be engaged by thewheel of the car or rolling stock which passes over the rail, in orderthat the tread bar may be depressed to oscillate the lever 26. The treadbar is jointed, as shown at 34, by a hinge, and one end of the saidtread bar is pivoted, as at 35, to a rail or the like, which will retainit in operative relation to the rail. The lever 27 has apost 36 carryinga tread bar 37 in operative relation to the other rail, and the saidtread bar 37 may be of the same general construction and arrangement asthe tread bar 32, and when a car travels along the rail and depressesthe tread bars, the weight of the car will be communicated to the leversunifor nly and without undue vibration, since the car first passes upthe inclined portions 40 of the said tread bars. A link a], is pivotallyconnected to the lever 27, and this link 41 is pivotally connected to anarm 42 secured to the shaft 13, and hence, it will rock the oscillatingarm 42 and rock the shaft 13 to a degree which will. cause the arm 23 tomove outwardly to thedotted line position shown in Fig. 2 to open thegate, whereas the weights will return the parts to their normal positionafter the weight has been removed from the tread bars.v

Two sets of levers 26 and 27 and parts associated therewith by which theweight of the car is communicated to the shaft, are provided on eachside of the gate, but as these parts are duplicated, a description ofone set will, it is thought, sufiice as a disclosure to enable oneskilled in the art to practice the invention. The two sets of levers areprovided on each side of the gate in order that the tread bars may be ofsuch length as to extend to positions near the gate so that the treadbars may serve to retain the gate in an open position until the weightof the car is removed from them. The operating levers, which are closelyassociated with the cross ties, may be protected from the accumulationof foreign substances by housings, and thus the operating of themechanism will not be impaired by such accumulations the said housingsbeing illustrated in Figs. 6 and 7, and they may be modified to suitparticular requirements. I claim: V r 1. In a mine door operatingmechanism, a door mounted to guard a track, levers having their innerends pivotally connected to i afixed object, posts carried by each ofthe said levers, tread bars carried by said posts and supported paralleland in close proximity to one of the rails, levers having their innerends pivotally connected to bases, means for pivotally connecting oneeach of the first mentioned levers to one each of the second mentionedlevers, posts connected to the second mentioned levers, tread barssupported by the posts in proximity to the other rail link is pivotallyconnected, means for oscillatably mounting the last mentioned arm, abracket carried by the last mentioned arm,

and means for pivotally connecting the sec-' ond mentioned arm to thelast mentioned arm for communicating the motion of the shaft to thegate.

2. In a mine door operating mechanism,

a door mounted to guard a track, levers having their inner endspivotally connected to a tixedobject,posts carried by each of the saidlevers, tread bars carried by said posts and supported parallel and inclose proximity to one of the rails, levers having their inner endspivotally connected to bases, posts connected to the second mentionedlevers, tread bars supported by the posts in proximity to the other railand projecting above the said rail, means for pivotally connecting one.

each of the first mentioned levers to one each of the second mentionedlevers, a door oper ating shaft, links and arms connecting the secondmentioned levers with the shaft for operating the shaft, a dooroperating arm carried by the'shaft, a link pivotally con nected to thedoor, an arm to which the link is pivotally connected, means foroscillatably mounting the last mentioned arm, a bracket carried by thelast mentioned arm. yokes extending inwardly from and attached to theshaft when the gate is closed and weights carried by the said yoke, andmeans for pivotally connecting the second mentioned arm to the lastmentioned arm for communicating the motion of the shaft to the gate.

WILLIAM KORTKAMP,

